Master's MateSafety Initiative Network
The Master's Mate Safety Initiative Network (MMSIn) — like AAA for the ocean, but free & community-driven. Cruisers keeping each other safe: anchor-drag & distress alerts, a verified captains directory, and a watch network that has your back.
Freight Barge
SI 720
U.S. Official No. 552205
Not yet on Master's MateType
Freight Barge
Flag
USALength
59.4 m
Beam
10.7 m
Draft
3.3 m
First reported
Jun 2026
AIS reports
1
An American freight barge, SI 720 measures 59.4 metres. Below, she has a beam measuring 10.7 metres and a draft of 3.3 m. Her papers read U.S. official number 552205. SI 720 is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card · for commercial operators
Eyes on SI 720, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever SI 720 roams, you're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
Free with your claim · for commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SI 720 on the map. It hands you the full bridge:
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim SI 720 and switch it all on
Free to join · nothing to install to start · cancel anytime
About SI 720
What kind of vessel is SI 720?
SI 720 is a Freight Barge flagged to United States of America.
What is SI 720's U.S. Official No.?
SI 720's U.S. Official No. is 552205.
How big is SI 720?
SI 720 is about 59.4 m long, 10.7 m on the beam, drawing 3.3 m.
Is SI 720 on the Master's Mate Safety Initiative Network?
Not yet. If SI 720 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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